The quadratic equation whose roots are 1/2 and - 1/2 is

Mathematics

1 answer:

lesya692 [45]2 years ago

6 0

Answer:

4x^2 - 1 = 0

Step-by-step explanation:

x = 1/2, x = -1/2

2x = 1, 2x = - 1

2x - 1 = 0, 2x + 1 = 0

( 2x - 1 )( 2x + 1 ) = 0

4x^2 - 1 = 0

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KATRIN_1 [288]

Answer:

The circumference of the yellow circle is $9\pi$ or $28.27cm^2$ approximately, the circumference of the blue circle is $6\pi$ or $18.85m^2$ approximately, the circumference of the green circle is $80\pi$ or $251.33mm^2$ approximately, the circumference of the red circle is $5\pi$ or $15.71cm^2$ approximately, and the circumference of the pink circle is $7\pi$ or $21.99cm^2$ approximately.

Step-by-step explanation:

To find the circumference of a circle, you need to multiply the diameter of the circle and multiply it by $\pi$ . In this case, the circumferences of the yellow circle are $9\pi$ or approximately $28.27cm^2$ , the circumference of the blue circle is $6\pi$ or approximately $18.85m^2$ , the circumference of the green circle is $80\pi$ or approximately $251.33mm^2$ , the circumference of the red circle is $5\pi$ or approximately $15.71cm^2$ , and the circumference of the pink circle is $7\pi$ or approximately $21.99cm^2$ .